干旱区生态环境知识资源中心(Arid): An Experimental Study to Improve the Nutrients and the Mechanical Properties of Copper Tailings Sand in China's Arid Zone by Biomineralization of Locally Isolated Urease-Producing Bacteria

Arid

DOI	10.3390/su151310077
	An Experimental Study to Improve the Nutrients and the Mechanical Properties of Copper Tailings Sand in China's Arid Zone by Biomineralization of Locally Isolated Urease-Producing Bacteria
	Yue, Jianmin; Song, Naiping; Meng, Chen; Xie, Li; Chang, Daoqin
通讯作者	Song, NP
来源期刊	SUSTAINABILITY
EISSN	2071-1050
出版年	2023
卷号	15 期号:13
英文摘要	Microbially induced carbonate precipitation (MICP) technology is an environmentally friendly technique that can contribute to tailings consolidation and ecosystem restoration. Our study found that local MICP bacteria, Lysinibacillus fusiformis, could remediate copper tailings pollution at different slope positions (K1, K2, and K3) in arid areas. We analyzed the effect of MICP treatment on the slag from macro- to microscopic levels with a dissolution test, soil physical and chemical tests, wind tunnel testing experiments, and scanning electron microscopy (SEM). The results demonstrated that the MICP bacteria, L. fusiformis, effectively remodeled the slag structure, thereby preventing the diffusion of tailing slag caused by wind erosion. This structural remodeling resulted in a significant increase in slag strength (maximum strength: 2707 KPa) and an increased content of CaCO3. Furthermore, it led to a significant reduction in total salinity content (36.4-43.6%), pH (4.1-4.4%), and improvement in nutritional status (total potassium content (16-31.4%) and the available phosphorus content (2.1-2.3 times) of the tailings slag (p < 0.05). There was also a 15% increase in urease and catalase activity in K1, a 7% increase in invertase activity in K3 (p < 0.05), and a significant increase in carbon and nitrogen microbial biomass in K1, K2, and K3 (p < 0.05).
英文关键词	arid areas copper tailings local MICP bacteria macro- to microscopic analysis
类型	Article
语种	英语
开放获取类型	gold
收录类别	SCI-E ; SSCI
WOS记录号	WOS:001028546300001
WOS类目	Green & Sustainable Science & Technology ; Environmental Sciences ; Environmental Studies
WOS研究方向	Science & Technology - Other Topics ; Environmental Sciences & Ecology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/398809
推荐引用方式 GB/T 7714	Yue, Jianmin,Song, Naiping,Meng, Chen,et al. An Experimental Study to Improve the Nutrients and the Mechanical Properties of Copper Tailings Sand in China's Arid Zone by Biomineralization of Locally Isolated Urease-Producing Bacteria[J],2023,15(13).
APA	Yue, Jianmin,Song, Naiping,Meng, Chen,Xie, Li,&Chang, Daoqin.(2023).An Experimental Study to Improve the Nutrients and the Mechanical Properties of Copper Tailings Sand in China's Arid Zone by Biomineralization of Locally Isolated Urease-Producing Bacteria.SUSTAINABILITY,15(13).
MLA	Yue, Jianmin,et al."An Experimental Study to Improve the Nutrients and the Mechanical Properties of Copper Tailings Sand in China's Arid Zone by Biomineralization of Locally Isolated Urease-Producing Bacteria".SUSTAINABILITY 15.13(2023).